# @Time    :2025/3/25 14:19
# 函数
# set.add(x)
# set.update(x)
# set.union(x)#合并
# set.remove(x)
# set.discard(x) #不报错
# set.pop()#随机取集合中的元素，目标不明确 不确定
# set.clear()
# set.difference(x1,...)#差集
# set.difference_update(x1,...)
# set.intersection(x1,...)#交集
# set.intersection_update(x1,...)
# set1 & set2
# set1 | set2
# set1 - set2
# set1.isdisjoint(set2)
# set1.issubset(set2)
# set1.issuperset(set2)
# set1.symmetric_difference(set2)
# set1.symmetric_difference_update(set2)
# set.copy()
# len(set)
# max(set)
# min(set)
# sum(set)

